cc/layers/texture_layer_impl_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/layers/texture_layer_impl.h"
   6
   7 #include "cc/output/context_provider.h"
   8 #include "cc/output/output_surface.h"
   9 #include "cc/test/layer_test_common.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace cc {
  13 namespace {
  14
  15 void IgnoreCallback(uint32 sync_point, bool lost) {}
  16
  17 TEST(TextureLayerImplTest, Occlusion) {
  18   gfx::Size layer_size(1000, 1000);
  19   gfx::Size viewport_size(1000, 1000);
  20
  21   LayerTestCommon::LayerImplTest impl;
  22
  23   gpu::Mailbox mailbox;
  24   impl.output_surface()->context_provider()->ContextGL()->GenMailboxCHROMIUM(
  25       mailbox.name);
  26   TextureMailbox texture_mailbox(mailbox, GL_TEXTURE_2D, 0);
  27
  28   TextureLayerImpl* texture_layer_impl =
  29       impl.AddChildToRoot<TextureLayerImpl>();
  30   texture_layer_impl->SetBounds(layer_size);
  31   texture_layer_impl->SetContentBounds(layer_size);
  32   texture_layer_impl->SetDrawsContent(true);
  33   texture_layer_impl->SetTextureMailbox(
  34       texture_mailbox,
  35       SingleReleaseCallback::Create(base::Bind(&IgnoreCallback)));
  36
  37   impl.CalcDrawProps(viewport_size);
  38
  39   {
  40     SCOPED_TRACE("No occlusion");
  41     gfx::Rect occluded;
  42     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  43
  44     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
  45                                                  gfx::Rect(layer_size));
  46     EXPECT_EQ(1u, impl.quad_list().size());
  47   }
  48
  49   {
  50     SCOPED_TRACE("Full occlusion");
  51     gfx::Rect occluded(texture_layer_impl->visible_content_rect());
  52     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  53
  54     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
  55     EXPECT_EQ(impl.quad_list().size(), 0u);
  56   }
  57
  58   {
  59     SCOPED_TRACE("Partial occlusion");
  60     gfx::Rect occluded(200, 0, 800, 1000);
  61     impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
  62
  63     size_t partially_occluded_count = 0;
  64     LayerTestCommon::VerifyQuadsCoverRectWithOcclusion(
  65         impl.quad_list(),
  66         gfx::Rect(layer_size),
  67         occluded,
  68         &partially_occluded_count);
  69     // The layer outputs one quad, which is partially occluded.
  70     EXPECT_EQ(1u, impl.quad_list().size());
  71     EXPECT_EQ(1u, partially_occluded_count);
  72   }
  73 }
  74
  75 }  // namespace
  76 }  // namespace cc